Improvement in mills for sugar-cane



J. HOWARD. Sugar Mill.

Patented Aug. 31, 1858.

IIIIHIIHII! I I 3 W i ginrrnn rates- JEREMIAH nownnn,

" rricieizg OF NEXV YORK,

IMPROVEMENT IN NHL-LS FOR SUGAR-CANE.

Specification forming-part of LeltersPaicnt N L 2 3 10, dated August 31, 1858.

10 all whom it mag concern:

Be it known that I, JEREMIAH HOWARD, of the city, county, and State of New York, have invented a new a'nduseful Improvement in Mills for OrushingSuganCane and other Substances; and I do hereby declare that theifol lowing isafull, clear, and exact description of the same, reference being had tothe annexed drawings, making a part of this specification, in which 1 Figure/1 is an end view. of a mill with my invention applied wit, a portion of the latter being bisected, as indicated by the line mm, Fig. 3. Fig. 2 is a transverse central section of the same. Fig. 3 is a' plan or top view of the same. i

Similar'letters of refereneeindicate corresponding parts in the several figures.

I This invention consists in applying, by suitable means, hydraulic pressure to the lower,

rollers of a crushing-mill, so that the rollers willbeallowed to yield or give, andthe space between them and :,the upper roller regulated according to the Work to be performed, or, in,

other words, according to. the layer of stuff that is fed and crushed betweenthem; thereby insuring the mill against fracture,=and causing it to work much more efficiently than usual.

Toenable those skilled in-the art to fully proceed to describe p 1 A A A are three cast-iron" rollers,- which understand and construct my invention, I will are fitted betweenor have their bearings a a a in heads 13, which are attached to a suitable.

base orbed, G. The rollers are constructed and arranged in the usual way,"oi: in a way common to sugarcaneanills, the two lower rollers, A A, being in. the same horizontal plane, :with a space between anew, and the upper roller, -A, directly OVGP iJhGSDflCB between the lower rollers. The journals of the ,upper roller," A, are fitted in permanent bearings a, and the. bearings a of the roller A may be regulatedby set-screws 6-, so as to' fegulate the space between it and." the upper roller, A; as occasion may require. The bearings a, however, of the roller have the rods 1: of pistons 1) bearing against them, (s'eeFig, 1,) said pistons being fitted in-cylinders E E,

which areantach'ed to, andmay be cast'with the heauslijB of thermil F is a reservoir containing water,and G is a force-pump connected therewith. His a pipe which communicateswith the pump G, said pipe being connected with a pipe, I, the ends of which communicate with thecylindersE E.- A portion of the pipe I passes through the reservoir F, and to the portion of the pipe within the reservoir a loaded valve, J, is at:

taehed, the arm or lever d of the valve J, to I which the valve is attached, being prowided with a sliding weight, e.

The pump G may be. operated from any proper working part of the device,eitherfroni the driving-shaft or otherwise. In the drawings it is shown as being operated from the shaft or one of the journals M of the upper roller, A, by a connecting-rod, K, attached eccentrically to the end of the journal (:92.

The three rollers are allv connected at one end by gear-wl1eels L L L, as shown plainly in Fig. 3. t v

The operation is as follows: Motion is given the uppeFroller, A, in any proper way, and the sugar cane or other substance to be crushed is fed down between the rollersA A, the latter being adjusted at a proper distance from the former by regulating or turning the screws b b. The substance is crushed in pass, ing between the rollersA A, and the juieeis expressed tlierefron'ras it passes between the rollers A A, the latter rollers working quite close together, so that the substance will be subjected to a suiiicient pressure, which is produced by the pump G :torcing water from the reservoir F into the'cyliuders E, the pistons 1) being acted upon by the pressure-of the water, and the rods 0 acting directly on the bearings a. The pressure'ol" the water on the pistons D will be constant under an equal speed of the rollers and a certain adjustment of the weight e, so. as to allow a proper escape through, the valve J, and in case the substance operated upon passes between the rollers A A in alayer of unequal. th-ickness,which is always the case to a greater or less extent, the roller is allowed torecede, the valve J being momentarily"opened to afarther degree in order to. allow the propenvolume of water to escape. The pressure of roller A may he graduated as desired by adjusting the weight .e of valve J, and the pressure will always be commensurate with the work to be performed, none of the working parts of the mill being Subjected to any undue strain.

I do not confine niyself to the. precise form of valve J, nor to the specific arrangement of parts herein shown and 'deseribed,for the parts may be difierently constructed and'disposed' and still t-he same effect obtained by substam tially the same means.

. I- would remark that although the invention is shown applied to only one roller, A, still it may,if desired, be applied to both rollers AA. Having thus described my invention, what I'elaim as new, and desire to secure by Letters Patent, isv The employment or use of a pump, G, waterreservoir F, and valve J, in connection with necessary pipes H I and cylinders E, provided with pistons D, acting on the bearing of the roller or rollers, the whole being irrenged as shown, or in any equivalent way, so as to operate as and for the, purpose set forth.

, JEREMIAH HOWARD. XVitnesses':

'A. B. HAIGHT,

XV. HAUFF. 

